Evidence map›Paper›PMID 42088153›Full record

ArticleCase reports in dentistry2026

Cannabinoid Therapy for Refractory Trigeminal Neuropathic Pain: Quantification of Somatosensory Alterations (QualST) by 3D Stereophotogrammetry-Two Case Reports.

Alex Moreira Mélo, Luiz Guilherme Spadon-Brito, Júia Carrer Hallak, Glauce Crivelaro do Nascimento, Melissa de Oliveira Melchior, Simone Cecílio Hallak Regalo, Jardel Francisco Mazzi-Chaves, Laís Valencise Magri

Abstract read
In one paragraph

Article in Case reports in dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Alex Moreira MéloDepartment of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, SP, Brazil, usp.br.ORCID https://orcid.org/0000-0002-0433-2681
Luiz Guilherme Spadon-BritoDepartment of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, SP, Brazil, usp.br.ORCID https://orcid.org/0009-0009-3990-7172
Júia Carrer HallakDepartment of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, SP, Brazil, usp.br.ORCID https://orcid.org/0000-0002-8210-9098
Glauce Crivelaro do NascimentoDepartment of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, SP, Brazil, usp.br.
Melissa de Oliveira MelchiorDepartment of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, SP, Brazil, usp.br.ORCID https://orcid.org/0000-0003-4943-1242
Simone Cecílio Hallak RegaloDepartment of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, SP, Brazil, usp.br.ORCID https://orcid.org/0000-0003-4110-8299
Jardel Francisco Mazzi-ChavesDepartment of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, SP, Brazil, usp.br.ORCID https://orcid.org/0000-0002-9889-1790
Laís Valencise MagriDepartment of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, SP, Brazil, usp.br.ORCID https://orcid.org/0000-0001-8050-4396

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Trigeminal neuropathic pain (TNP) is a chronic and debilitating condition frequently resistant to conventional pharmacological therapies. Although cannabinoids have emerged as a potential adjunctive treatment, objective clinical documentation of their effects in orofacial neuropathic pain remains limited. Case Reports: We report two female patients with refractory TNP-one post-traumatic and one idiopathic-who experienced insufficient relief despite trials of anticonvulsants, antidepressants, topical agents, and local interventions. Both patients received a balanced tetrahydrocannabinol (THC):cannabidiol (CBD) sublingual formulation (20 mg/mL each) following a structured titration protocol and were monitored over 8 weeks. Outcomes were assessed using the Douleur Neuropathique 4 Questions (DN4), the visual analog scale (VAS), the World Health Organization Quality of Life-BREF (WHOQOL-Bref), and qualitative sensory testing (QualST). Additionally, three-dimensional facial stereophotogrammetry was employed to objectively quantify areas of hyperfunction and allodynia. Treatment resulted in a marked analgesic response (VAS reduction from 9 to 4 and from 10 to 2), qualitative changes in pain phenotype-from shock-like to predominantly burning-and functional improvement in mastication and oral hygiene. Stereophotogrammetry demonstrated a substantial reduction in sensitized regions, with extraoral hyperfunctional area decreasing from 113.72 to 27.54 cm Conclusion: These cases illustrate the potential clinical relevance of cannabinoids as an adjunctive approach for refractory TNP and highlight the importance of multidimensional assessment strategies. The findings should be interpreted cautiously given the descriptive nature of case reports; however, they underscore the need for controlled studies to further investigate the efficacy and safety of cannabinoid-based therapies in orofacial neuropathic pain.

Indexed as

cannabinoidscase reportmedical cannabisorofacial paintrigeminal neuralgia

Identifiers

PMID42088153
PMCPMC13137124

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.